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104-10216-10171 | 2025 RELEASE UNDER THE PRESIDENT JOHN F. KENNEDY ASSASSINATION RECORDS ACT OF 1992

10 June 1964

PO“ yewoRanpo FOR TES RECORD tC; 7 |
EuLETZCT : Tosts of Modified Sights for 7.62 Bolgiun (FAL) Rifle

EEFERTICE: Mano for Red. cated 23 May 64, Subject FAL Siloncers/
Sights, from C/\VE/SA/ESD/PS

By: 2. Oa 2 June 1964, Mr, Donald R. Dunn, TSD/EB and the

' -wmdersicned went to Isolation to test a nodified elght anda
telescopic sight daveloped Zor the 7.62 Esigium (#4L) Rifle in
“ancwer to roforence n). The tests were perforuod with tho assistance
Of Er, Janes Earb and lr, Glen Winstead, Isolation,

: 2, ‘The first tosts wore conducted with 2 Williass Paap sight
modified to fit an alusinus block which was mounted in nlace of the
atandard FAL rear sight. Tuo Willians sight kas a larzor dianeter
poop than the FAL cisht and has a wider rango of olovation settings
RS Woll cs more positive control over toth clevation and windare,
» Tho vain purpose of the test was to establish a point of roaferonce
- Of the aluminum block to natch the Eraduations on tho Willians
‘eight end allow the sight to be sot visually for tho cesired range
.ODCG tho woapon was zaroad, .
ve, 3. Firing commenced from 100 yards at 2 silhouette tarret
Going the hood of a jeep 25 2 rest. Esth uncerloaded and full losd
‘Younds were used, Light rain which craavually increased in jatensity
' during the day served to Coxpslicate the precedurs. Tha test :
‘Fesults et ranges from 25 yas. to 130 y<s, using the Villians
_ Sight are summarized in Attachzeat I. oxceedingly erratic results
+ Were ovtained throughout the tests and one atten % to duplicate
:; the 160 yd. zoro resulted in a differect setting later in the day,

.° 4. & 2X scope of Japanese manufacture equinped with aluninus

~founting rings frort and recr to fit tho rear gas port anc roar

+. Gigat mount respectivaly then tested. The Scope was attachad to

‘the rifle with difficulty and attespts to zero it wore frustrated

yby the inability to doterzine where the rizlo was snaooting. The

/ Bounting xoved thile attexyti: = to adjust tke olovation kuob and it

/ wes cetersined that the mount could not ke attached firnly enough
;to insure in retaining a proper zero. The test with the scope

/)Was aborted, . /
i eh -

poof

SESE

—

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3. It is recommended that the scopo and mount bo ciscarded
a3 unfeasiblo, The Williams sicht is acecotable slthouca tho
nesber of clicks por rovolution of tho knob should be roducad,
:  Purthor tosting of the uxderloaded azmzunition should bo con
Gucted to determino the reasons for the erratic porforzuance.

eo: ¢ c/TSsD
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- sttaceode ti . Le,
DDP/TSD/EB/DSWVEC

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=. @ June 1964 re i
“is. M§llgans Paep Sight et aL.

At 25 yés., reduced loads
. . Raise sight 60 clicks fron bottom
Match ref, line to 4th line fros top

at 50 yes,, reduced loads

Raise sight 80 clicks froz bottom 2: #

Lan. Hatch ref. line to Sth line from top . rane f
Bo: oo ee:
* at T3yds., reduced loads . 4
* Raise sight 80 to 110 clicks froz bottom ; a
. Azmunition performance very erratic, wide variance on _target= sf

: At 100 yds,, reduced loads : me

Raise sight 120 to 160 clicks
. ist trial, 160 clicks, little variance
tch réf, lino to Sth line from top
. 2nd trial 3 hrs. later, 120 clicks
“eg is 1. Mateh ref, line tc 7th line from top
_ at 150 yas., roduced loads
_ Raise sight 230 clicks (l trial) = =|...
Katch roz., line to 12.5 line from top ©
Cour not mount teloscopic sight properly. Began
. Shooting in scope, found it moved,

At. 100 yds., 2ul2 loads ee
B Raise sight 4 clicks from bottom :

At ‘150 yds., £u12 loads
i - Reise sight 8 clicks fron botton,

1.. Intermittant wmnin throughout tests. . .
2. Casas with reduced loads vero noted to be blackened at nect
.; @fter firing, Suspected to be low pressures not causing
. - eufficient case expansion to obtain proper seal, Thisan
contribute to erratic perforranco, Recormend gas port be turned
-; te off position to prevent action from opening and allowing
. gas leak. Also investigate soft annealing case necks.


